Olefin polymerization catalyst

Details Olefin polymerization catalyst Olefin polymerization catalyst

1990-10-18

1992-11-10

Schofer, Joseph L.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Plural component system comprising a - group i to iv metal...

502120, 502121, 502123, 502125, 502126, 502127, 502128, 526124, 526142, C08F 426

Patent

active

051622777

ABSTRACT:
An improved high activity olefin polymerization catalyst catalyzes the production of polymeric lower .alpha.-olefin having good properties and a relatively narrow particle size distribution. The catalyst is produced from an organoaluminum cocatalyst, a selectivity control agent and a novel olefin polymerization procatalyst which is prepared by contacting a tetravelent titanium halide, a halohydrocarbon, an electron donor and the solid procatalyst precursor obtained by heating an adduct of a carbonated magnesium ethoxide and a phenolic compound of enhanced acidity.

REFERENCES:
patent: 4525558 (1985-06-01), Takitani et al.
patent: 4540679 (1985-09-01), Arzoumanidis
patent: 4728705 (1988-03-01), Nestlerode et al.

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